Heating apparatus



Feb. 7, 1928; 1,658,367

' W. A. BOLLINGER HEATING APPARATUS Filed June 1926 Patented Feb. 7,1928.

UNITED STATES I WILLIAM A. BOLLINGER, or rrrrsreuaen, mmsnv m.

HEATING APPABATUS..

Application filed June 16,

derstood that the invention maybe embodied in any other type of heating apparatus wherein it is found to be applicable.

The primary object of the" invention is to provide a generally improved heating apparatus or system of the character described,

which utilizes, for heating purposes, the heat generated by .the draft products of coinbustion that are ordinarily dissipated through the flue or chimney. Under such conditions providing a greatly increased heat supply relatively to. the fuel consumption.

Another important object of the invention is to provide a heating apparatus of the type indicated embodying an arrange ment of heat accumulating and heat radiating conduits, which may be readily installed orconnected to heating unitsand systems already installed, as well as to form a component part of a new heating system.

Further objects of the invention are to provide a deviceof the character stated, in

a manner as hereinafter referred to, which is simple in its construction and arrangement, durable and efficient in its use, and comparali tively inexpensive to manufacture.

Vith the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter de-' scribed and claimed, it being understood that changes in the precise embodiment of the invention hereinafter disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawing wherein like reference designate corresponding throughout the several views:

Figure 1 is a top plan view of a heating apparatus, of the hot air type, constructed in accordance with the invention, with the outer casing in cross section.

Figure 2 is a view on line. IIII, Figure 1.,

Referring in detail tothe drawing 1 denotes the furnace of the heating apparatus. The furnace 1 may be of any suitable and convenient construction, in the; present innumerals of parts stance, embodying a fire box or combustion 1926. Serial at. 116,452.

chamberwhich opens at its rear end into a rearwardly extending draft chamber 2.-

The furnace lincludes an outer casing or shellZy, of conventional form, which extends a considerable distance above the top of the firebox anddraft chamber for a pun pose to be described. The casing 3 provided with the usual heat distributor dome 4 and the usual hot air distributing pipes The air tobe heated is conducted to within the casing 3 by means of ,a large fresh air supply pipe A. The .latter communicates withthe casing 3adjacent to the lower end, thereof. a r

As a means of supplying additional or auxiliary heat, in connection with the furnace 1, to the air to be distributed, a vertically disposed heat radiator 6 is mounted directly on the top of the fire box and draft chamber and extends from the front end of the fire box to the rear end of said chamber.

The radiator comprises a series of opposed radiator elements, each consisting of a series of spaced, vertically disposed pipes T,

and an upper and alower set of couplings 8.

The couplings 8, of the upper setlof couplings, are invertedU-shape, and the cou-l plings 8, of the lower set of couplings, are

OrUgs'ha B contour. The couplings of the upperf set are alternately disposed with re spect' tothose of the loweraset. The couplings of the upper set connect the pipes in pairs at the upper ends thereof, and the couplings of the lower set connect the pipes in pairs at the lower ends thereof;

The radiator 6 further includes an inverted U-shaped forward upper coupling 8, and a U-shaped rear lower coupling 8. The forward upper coupling connects the upper end of the forward pipe, of one of the radiator elements of the series, to the upper end of the forward pipe of the intermediate radiator element of the series. The rear lower coupling connects the lower end of the rear I pipe of the intermediate radiator element to the'lower end of the rear pipe of the other outer radiator element. The rear pipe of that radiator element which has its forward pipe coupled to the intermediate radiator element, opens into the rear end of the draft chamber 2 through the top thereof. The forward pipe of that outer radiator element which has its rear pipe connected to the intermediate element, is adapted to be connected to the flue or chimney,

The setting up of the radiator 6, in the manner aforesaid, provides an uninterrupted, continuous passage 9fron1 the inlet to the outlet of the radiator. The inlet for the radiator is indicated at 10, and the outlet at 11. The inletlO is arranged at the rear end of the chamber 2, and the outlet 11 is positioned in vertical alignment with the outer end portion of the firebox or combustion chamber. The radiator 6 extends to a point in close proximity to the top of the dome 4t.

In a heating apparatus of the usual constructiomthe conduit connecting the furnace with the chimney is con'iparatively short. It is Well known in the art, that the draft action through such short conduit to stimulate coinbustion, causes the conduit to heat intensely, often times to the point of glowing. The heat passing through and emanating from the conduit is uselessly dissipated through the chimney and the furnace room. By the use of my improved radiator 6, however, the draft products of combustion, consisting of heat, smoke and flame, are drawn through a comparatively long passage 9, "whereby the radiator 6 will be intensely heated. As the latter is confined within the casing 3, the heat radiating therefrom will be utilized to heat the air to be distributed. The draftproducts of combustion, upon entering the chimney from the passage outlet 11, will have a comparatively low temperature owing to the distance of travel through the radi ator 6.

In order to establish proper draft action through the radiator 6 and the associated chimney, it is essential that the outlet end portion 12, of the radiator 6, be disposed upwardly, and that the lower end thereof be continually subjected to a high temperature. By positioning the lower end of the portion 12 on and at the forward end of the furnace 1 such temperature is provided, in the embodin'ient illustrated in the drawing.

It will be obvious that the arrangement, configuration, and disposition of my improved radiator may be widely varied to best meet conditions found in practice, as the principle of the invention consists merely in utilizing the draft products of combustion for auxiliary. heating purposes, by passing the latter through a comparative long conduit, while confining the latter in the heating medium to be heated, and supplying the necessary temperature, as above stated, to provide proper draft action.

What I claim is: I

In a heating apparatus,a furnace including a fire-box opening at its rear into a rearwari'llydirected draft chamber having its outletatthe rear of the top thereof, an inner and a pair of outer vertically disposed radiator elements opposing each other mounted directly on the top of said firebox and draft chamber and extending from the front of the firebox to the rear of said draft chan'iber, one outer and said inner element comn'iunicating with each other at the top of the forward ends thereof, the other outer and said inner element communicating with each other at the bottom at the rear ends thereof, one of said outer elements opening at the bottom of'its rear end into the outlet of said draft chamber, the other outer element having its forward end vertically disposed and extended to communicate with a flue or chimney, and said furnace further including a casing providing an air chamber over the firebox and in which is positioned said radiator.

In testimony whereof I aflix my signature.

WILLIAM A. BOLLINGER. 

